“Front shoulders, center of chest sounds about right for a dog.”
Looks like you were right on target with that. Here’s a dog circulatory system diagram for everyone who’s interested.
https://anatomywiki101.com/dog-circulatory-system/
...will continue looking.
Here’s another good page with various anatomical diagrams including heart and circulatory, lungs, nervous system and more.
http://familyvet.com/client-education/dog-anatomy.html
I carry concealed for the same reason. It was actually a pit bull attacking my lab puppy at a dog park - for no reason - that finally pushed me to go ahead and get my ccw.
That will not happen again. I will not allow it. If it is attempted, the offending pit bull will learn what its like to get shot 10 times as I empty the magazine into it.